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Sidorenko LV, Chandler VL, Wang X, Peterson T. Transcribed enhancer sequences are required for maize p1 paramutation. Genetics 2024; 226:iyad178. [PMID: 38169343 PMCID: PMC10763531 DOI: 10.1093/genetics/iyad178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 08/27/2023] [Indexed: 01/05/2024] Open
Abstract
Paramutation is a transfer of heritable silencing states between interacting endogenous alleles or between endogenous alleles and homologous transgenes. Prior results demonstrated that paramutation occurs at the P1-rr (red pericarp and red cob) allele of the maize p1 (pericarp color 1) gene when exposed to a transgene containing a 1.2-kb enhancer fragment (P1.2) of P1-rr. The paramutable P1-rr allele undergoes transcriptional silencing resulting in a paramutant light-pigmented P1-rr' state. To define more precisely the sequences required to elicit paramutation, the P1.2 fragment was further subdivided, and the fragments transformed into maize plants and crossed with P1-rr. Analysis of the progeny plants showed that the sequences required for paramutation are located within a ∼600-bp segment of P1.2 and that this segment overlaps with a previously identified enhancer that is present in 4 direct repeats in P1-rr. The paramutagenic segment is transcribed in both the expressed P1-rr and the silenced P1-rr'. Transcription is sensitive to α-amanitin, indicating that RNA polymerase II mediates most of the transcription of this sequence. Although transcription within the paramutagenic sequence was similar in all tested genotypes, small RNAs were more abundant in the silenced P1-rr' epiallele relative to the expressed P1-rr allele. In agreement with prior results indicating the association of RNA-mediated DNA methylation in p1 paramutation, DNA blot analyses detected increased cytosine methylation of the paramutant P1-rr' sequences homologous to the transgenic P1.2 subfragments. Together these results demonstrate that the P1-rr enhancer repeats mediate p1 paramutation.
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Affiliation(s)
- Lyudmila V Sidorenko
- Department of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA
- Corteva Agriscience, 7300 NW 62nd Ave, Johnston, IA 50131, USA
| | - Vicki L Chandler
- Department of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA
- Minerva University, 14 Mint Plaza, Suite 300, San Francisco, CA 94103, USA
| | - Xiujuan Wang
- Corteva Agriscience, 7300 NW 62nd Ave, Johnston, IA 50131, USA
- Department of Genetics, Development, and Cellular Biology, Department of Agronomy, Iowa State University, Ames, IA 50010, USA
| | - Thomas Peterson
- Department of Genetics, Development, and Cellular Biology, Department of Agronomy, Iowa State University, Ames, IA 50010, USA
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Shishkina SV, Levandovskiy IA, Ukrainets IV, Sidorenko LV, Grinevich LA, Yanchuk IB. Polymorphic modifications of a 1H-pyrrolo[3,2,1-ij]quinoline-5-carboxamide possessing strong diuretic properties. Acta Crystallogr C Struct Chem 2018; 74:1759-1767. [PMID: 30516162 DOI: 10.1107/s2053229618016352] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 11/18/2018] [Indexed: 11/10/2022]
Abstract
6-Hydroxy-N-(4-methoxyphenyl)-4-oxo-2,4-dihydro-1H-pyrrolo[3,2,1-ij]quinoline-5-carboxamide, C19H16N2O4, possesses strong diuretic properties and can be used as a new hypertension remedy. Two polymorphic modifications of this compound have been found, namely the triclinic polymorph (space group P-1), with one molecule in the asymmetric unit, and the monoclinic polymorph (space group P21/n), with two molecules in asymmetric unit. An analysis of the pairwise interaction energies between the molecules in the crystal phase revealed differences in the crystal packing. The triclinic form has only one level of organization, namely a chain/column, while the monoclinic form has two levels of organization, with a chain/column as the primary basic structural motif and a layer as the secondary basic structural motif.
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Affiliation(s)
- Svitlana V Shishkina
- SSI `Institute for Single Crystals' NAS of Ukraine, 60 Nauky ave., Kharkiv 61001, Ukraine
| | - Igor A Levandovskiy
- Department of Organic Chemistry, National Technical University of Ukraine, Pr. Pobedy 37, 03056 Kiev, Ukraine
| | - Igor V Ukrainets
- National University of Pharmacy, 4 Valentinovska Str., Kharkiv 61168, Ukraine
| | | | - Lina A Grinevich
- National University of Pharmacy, 4 Valentinovska Str., Kharkiv 61168, Ukraine
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Ukrainets IV, Burian AA, Baumer VN, Shishkina SV, Sidorenko LV, Tugaibei IA, Voloshchuk NI, Bondarenko PS. Synthesis, Crystal Structure, and Biological Activity of Ethyl 4-Methyl-2,2-dioxo-1 H-2λ⁶,1-benzothiazine-3-carboxylate Polymorphic Forms. Sci Pharm 2018; 86:scipharm86020021. [PMID: 29848976 PMCID: PMC6027672 DOI: 10.3390/scipharm86020021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/19/2018] [Accepted: 05/21/2018] [Indexed: 12/02/2022] Open
Abstract
Continuing the search for new potential analgesics among the derivatives of 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylic acid, the possibility of obtaining its esters by the alkylation of the corresponding sodium salt with iodoethane in dimethyl sulfoxide (DMSO) at room temperature was studied. It was found that under such conditions, together with the oxygen atom of the carboxyl group, a heteroatom of nitrogen is also alkylated. Therefore, the product of the reaction studied is a mixture of ethyl 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylate (major) and its 1-ethyl-substituted analog (minor). A simple but very effective method of preparative separation of these compounds was proposed. Moreover, the heterogeneous crystallization from ethanol was revealed to result in a monoclinic polymorphic form of ethyl 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylate, while the homogeneous crystallization results in its orthorhombic form. The molecular and crystal structures of both forms were confirmed by X-ray diffraction analysis, and the phase purity by powder diffraction study. The pharmacological tests carried out on the model of a carrageenan edema showed that the screening dose of 20 mg/kg of 1-ethyl-substituted ester and the orthorhombic form of its analog unsubstituted in position 1 exhibited weak anti-inflammatory and moderate analgesic effects. At the same time, the monoclinic form of ethyl 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylate appeared to be both a powerful analgesic and an anti-inflammatory agent that exceeded Piroxicam and Meloxicam in the same doses by these indicators. A detailed comparative analysis of the molecular and crystal structures of two polymorphic forms of ethyl 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylate was carried out using quantum chemical calculations of the energies of pairwise interactions between molecules. An explanation of the essential differences of their biological properties based on this was offered.
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Affiliation(s)
- Igor V Ukrainets
- Department of Pharmaceutical Chemistry, National University of Pharmacy, 53 Pushkinska st., 61002 Kharkiv, Ukraine.
| | - Anna A Burian
- Department of Pharmaceutical Chemistry, National University of Pharmacy, 53 Pushkinska st., 61002 Kharkiv, Ukraine.
| | - Vyacheslav N Baumer
- SSI "Institute for Single Crystals", National Academy of Sciences of Ukraine, 60 Nauki ave., 61001 Kharkiv, Ukraine.
| | - Svitlana V Shishkina
- SSI "Institute for Single Crystals", National Academy of Sciences of Ukraine, 60 Nauki ave., 61001 Kharkiv, Ukraine.
- Department of Inorganic Chemistry, V. N. Karazin Kharkiv National University, 4 Svobody sq., 61077 Kharkiv, Ukraine.
| | - Lyudmila V Sidorenko
- Department of Pharmaceutical Chemistry, National University of Pharmacy, 53 Pushkinska st., 61002 Kharkiv, Ukraine.
| | - Igor A Tugaibei
- Department of Clinical Biochemistry, Forensic Toxicology, and Pharmacy, Kharkiv Medical Academy of Postgraduate Education, 58 Amosov st., 61176 Kharkiv, Ukraine.
| | - Natali I Voloshchuk
- Department of Pharmacology, N. I. Pirogov Vinnitsa National Medical University, 56 Pirogov st., 21018 Vinnitsa, Ukraine.
| | - Pavlo S Bondarenko
- Department of Pharmacology, N. I. Pirogov Vinnitsa National Medical University, 56 Pirogov st., 21018 Vinnitsa, Ukraine.
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Ukrainets IV, Sidorenko LV, Golik MY, Chernenok IM, Grinevich LA, Davidenko AA. N-Aryl-7-hydroxy-5-oxo-2,3-dihydro-1H,5H-pyrido-[3,2,1-ij]quinoline-6-carboxamides. The Synthesis and Effects on Urinary Output. Sci Pharm 2018; 86:E12. [PMID: 29642551 PMCID: PMC6027687 DOI: 10.3390/scipharm86020012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/27/2018] [Accepted: 02/04/2018] [Indexed: 12/11/2022] Open
Abstract
Continuing a targeted search for new leading structures with diuretic action among tricyclic derivatives of hydroxyquinolines, which are of interest as potential inhibitors of aldosterone synthase, the synthesis of a series of the corresponding pyrido[3,2,1-ij]quinoline-6-carboxanilides was carried out by amidation of ethyl-7-hydroxy-5-oxo-2,3-dihydro-1H,5H-pyrido[3,2,1-ij]quinoline-6-carboxylate with aniline, aminophenols and O-alkylsubstituted analogs with high yields and purity. The optimal conditions of this reaction are proposed; they make it possible to prevent partial destruction of the original heterocyclic ester and thereby avoid formation of specific impurities of 7-hydroxy-2,3-dihydro-1H,5H-pyrido[3,2,1-ij]quinolin-5-one. To confirm the structure of all substances obtained, elemental analysis, nuclear magnetic resonance (NMR) spectroscopy, and mass spectrometry were used. Moreover, the peculiarities of their ¹H and 13C-NMR spectra, as well as their mass spectrometric behavior under conditions of electron impact ionization, were discussed. The effect of pyrido[3,2,1-ij]quinoline-6-carboxanilides on the urinary function of the kidneys was studied in white rats of both genders by the standard method of oral administration at a dose of 10 mg/kg. Testing was conducted in comparison with hydrochlorothiazide, as well as with structurally close pyrrolo[3,2,1-ij] quinoline-5-carboxanilides studied earlier with the same substituents in the anilide fragments. It was found that addition of one methylene unit to the heterocycle partially hydrogenated and annelated with the quinolone core has a positive impact on biological properties-most of the substances studied exhibit a statistically significant diuretic effect exceeding the activity of not only hydrochlorothiazide, in some cases, but also the action of the structural analogs. The important structural and biological regularities, which are common with pyrroloquinolines and introduced by a chemical modification, were revealed. The importance of the presence in the structure of terminal amide fragments of tricyclic quinoline-3-carboxamides of a 4-methoxy-substituted aromatic ring was particularly marked. The expediency of further study of pyridoquinolines as promising diuretic agents has been shown.
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Affiliation(s)
- Igor V Ukrainets
- Department of Pharmaceutical Chemistry, National University of Pharmacy, 53 Pushkinska St., 61002 Kharkiv, Ukraine.
| | - Lyudmila V Sidorenko
- Department of Pharmaceutical Chemistry, National University of Pharmacy, 53 Pushkinska St., 61002 Kharkiv, Ukraine.
| | - Mykola Y Golik
- Department of Analytical Chemistry, National University of Pharmacy, 4 Valentynivska St., 61168 Kharkiv, Ukraine.
| | - Igor M Chernenok
- Department of Pharmaceutical Chemistry, National University of Pharmacy, 53 Pushkinska St., 61002 Kharkiv, Ukraine.
| | - Lina A Grinevich
- Department of Medical Chemistry, National University of Pharmacy, 4 Valentynivska St., 61168 Kharkiv, Ukraine.
| | - Alexandra A Davidenko
- Department of Pharmaceutical Chemistry, N. I. Pirogov Vinnitsa National Medical University, 56 Pirogov St., 21018 Vinnitsa, Ukraine.
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Sidorenko LV, Lee TF, Woosley A, Moskal WA, Bevan SA, Merlo PAO, Walsh TA, Wang X, Weaver S, Glancy TP, Wang P, Yang X, Sriram S, Meyers BC. GC-rich coding sequences reduce transposon-like, small RNA-mediated transgene silencing. Nat Plants 2017; 3:875-884. [PMID: 29085072 DOI: 10.1038/s41477-017-0040-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 09/29/2017] [Indexed: 05/04/2023]
Abstract
The molecular basis of transgene susceptibility to silencing is poorly characterized in plants; thus, we evaluated several transgene design parameters as means to reduce heritable transgene silencing. Analyses of Arabidopsis plants with transgenes encoding a microalgal polyunsaturated fatty acid (PUFA) synthase revealed that small RNA (sRNA)-mediated silencing, combined with the use of repetitive regulatory elements, led to aggressive transposon-like silencing of canola-biased PUFA synthase transgenes. Diversifying regulatory sequences and using native microalgal coding sequences (CDSs) with higher GC content improved transgene expression and resulted in a remarkable trans-generational stability via reduced accumulation of sRNAs and DNA methylation. Further experiments in maize with transgenes individually expressing three crystal (Cry) proteins from Bacillus thuringiensis (Bt) tested the impact of CDS recoding using different codon bias tables. Transgenes with higher GC content exhibited increased transcript and protein accumulation. These results demonstrate that the sequence composition of transgene CDSs can directly impact silencing, providing design strategies for increasing transgene expression levels and reducing risks of heritable loss of transgene expression.
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Affiliation(s)
| | - Tzuu-Fen Lee
- Delaware Biotechnology Institute, Department of Plant and Soil Sciences, University of Delaware, Newark, DE, 19716, USA
- Dupont Pioneer, Johnston, IA, 50131, USA
| | - Aaron Woosley
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - William A Moskal
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - Scott A Bevan
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - P Ann Owens Merlo
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - Terence A Walsh
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - Xiujuan Wang
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - Staci Weaver
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - Todd P Glancy
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - PoHao Wang
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - Xiaozeng Yang
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, 100097, Beijing, China
| | - Shreedharan Sriram
- Dow AgroSciences LLC., 9330 Zionsville Road, Indianapolis, IN, 46268, USA
| | - Blake C Meyers
- Delaware Biotechnology Institute, Department of Plant and Soil Sciences, University of Delaware, Newark, DE, 19716, USA.
- Donald Danforth Plant Science Center, St. Louis, MO, 63132, USA.
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Sidorenko LV, Perminova LA, Osiian SA, Barkhatova LA. [Malignancy monitoring in the pediatric population of the Orenburg Region]. Gig Sanit 2009:95-96. [PMID: 19799236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The paper gives the results of a retrospective epidemiological survey for malignances in the pediatric population of the Orenburg Region in 1995 to 2007. The average long-term morbidity rates were determined by the main (central, western, eastern) areas of the region; the areas were ranked by the malignancy morbidity rates among the pediatric population as a whole and by nosological entities. The authors provide the structural characteristics of cancer in the Orenburg Region as compared with the general Russian data.
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Affiliation(s)
- Vicki L Chandler
- Department of Plant Sciences, University of Arizona, Tucson 85721, USA.
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Sidorenko LV, Peterson T. Transgene-induced silencing identifies sequences involved in the establishment of paramutation of the maize p1 gene. Plant Cell 2001; 13:319-35. [PMID: 11226188 PMCID: PMC102245 DOI: 10.1105/tpc.13.2.319] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2000] [Accepted: 12/04/2000] [Indexed: 05/18/2023]
Abstract
A transgene carrying a distal enhancer element of the maize P1-rr promoter caused silencing of an endogenous P1-rr allele in the progeny of transgenic maize plants. Expression of both the transgene and the endogenous P1-rr allele was reduced in the affected plants. The silenced phenotype was observed in the progeny of seven of eight crosses involving three independent transgenic events tested (average frequency of 19%). This phenotype was associated with an induced epigenetic state of the P1-rr allele, termed P1-rr', which is characterized by increased methylation of the P1-rr flanking regions and decreased levels of P1-rr transcript. The P1-rr' epiallele is highly heritable in the absence of the inducing P1.2b::GUS transgene, and it can impose an equivalent state on a naive P1-rr allele in subsequent crosses (paramutation). In contrast, parallel experiments with two other P::GUS transgenes that contained the same basal P1-rr promoter fragment but different upstream sequences revealed no detectable silencing effect. Thus, transgenes carrying a specific enhancer fragment of the P1-rr gene promoter can trigger a paramutant state (P1-rr') of the endogenous P1-rr gene that is maintained in the absence of the inducing transgene. We discuss the potential role of the P1-rr distal enhancer element in the establishment and propagation of a paramutation system in maize.
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Affiliation(s)
- L V Sidorenko
- Department of Zoology and Genetics, Iowa State University, Ames, Iowa 50011, USA
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Cocciolone SM, Sidorenko LV, Chopra S, Dixon PM, Peterson T. Hierarchical patterns of transgene expression indicate involvement of developmental mechanisms in the regulation of the maize P1-rr promoter. Genetics 2000; 156:839-46. [PMID: 11014829 PMCID: PMC1461292 DOI: 10.1093/genetics/156.2.839] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The maize P1-rr gene encodes a Myb-homologous transcription factor that regulates the synthesis of red flavonoid pigments. Maize plants transformed with segments of the P1-rr promoter driving a GUS reporter gene exhibit significant variation in transgene expression, both between independent transformation events and among sibling plants derived from a single event. Interestingly, variability in spatial expression is not random; rather, transgene activity occurs predominantly in five patterns that fit a hierarchy: expression is most common in kernel pericarp, with sequential addition of expression in cob glumes, husk, silk, and tassel. The hierarchical expression pattern of P-rr::GUS transgenes suggests a possible model for developmental regulation of the P1-rr gene. Our results demonstrate that variability in transgene expression, a common occurrence in transgenic plant studies, can be informative if adequately analyzed to uncover underlying patterns of gene expression.
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Affiliation(s)
- S M Cocciolone
- Department of Zoology and Genetics, Department of Agronomy, Iowa State University, Ames, Iowa 50011, USA
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Sidorenko LV, Li X, Cocciolone SM, Chopra S, Tagliani L, Bowen B, Daniels M, Peterson T. Complex structure of a maize Myb gene promoter: functional analysis in transgenic plants. Plant J 2000; 22:471-482. [PMID: 10886767 DOI: 10.1046/j.1365-313x.2000.00750.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The maize P gene encodes a Myb-like transcription factor that regulates synthesis of red flavonoid pigments in floral organs. To study the transcriptional regulation of the P gene, candidate regulatory sequences of the P1-rr gene promoter were identified by Ac insertional mutagenesis and subjected to functional testing in transgenic maize plants. The results indicate that a 561 bp fragment (Pb) encompassing the transcription start site (-235 to +326) supports weak expression of a GUS reporter gene in floral organs, including husk, silk, kernel pericarp, cob and male inflorescence. Two other fragments, located approximately 1 and 5 kb 5' of the transcription start site, increased the levels of GUS activity in floral tissues and thus appear to contain enhancer elements. All of the tested constructs gave similar patterns of GUS expression, suggesting that the 561 bp Pb fragment that is common among the transgene constructs contains regulatory elements that promote activation in floral organs. The basal promoter and proximal enhancer fragments contain putative binding sites for bZip regulatory factors, and a complex arrangement of palindromes including a large inverted repeat of two tRNA-like genes. Possibly, interconversions between linear and cruciform conformations of the palindromes may affect protein/DNA interactions and thereby modulate P1-rr expression.
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Affiliation(s)
- L V Sidorenko
- Department of Zoology and Genetics, Iowa State University, Ames 50011, USA
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Sidorenko LV, Koval' DE. [IR thermography in the evaluation of the effectiveness of treating patients with cervical osteochondrosis by manual therapy]. Ortop Travmatol Protez 1989:28-31. [PMID: 2628825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Sidorenko LV. [A method of using infrared thermography in the diagnosis of osteochondrosis of the cervical spine]. Ortop Travmatol Protez 1988:48-50. [PMID: 3211519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Popovichenko NV, Chebotareva LL, Sidorenko LV. [Use of polyrheography and infrared thermography in the diagnosis of autonomic vascular dystonia]. Vrach Delo 1986:86-8. [PMID: 3825082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Donchenko GV, Kuz'menko IV, Kovalenko VN, Sidorenko LV. [Determination of adenine nucleotide and inorganic phosphate contents of liver of rats with E-hypovitaminosis and administration of alpha-tocopherol and ubiquinone-9]. Ukr Biokhim Zh (1978) 1981; 53:94-8. [PMID: 7256957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
It is shown that in the rat liver with E-hypovitaminosis the ATP content, sum of adenine nucleotides, and the phosphate potential value ([ATP]/[ADP.]Pi) decrease, whereas the amount of ADP, AMP and Pi remains practically unchanged. 3h after intravenous administration of alpha-tocopherol of ubiquinone to rats with E-hyovitaminosis the mentioned indices normalize, which evidences for a considerable increase in the level of bioenergetic processes. The direction of the mentioned changes corresponds to changes in the ubiquinone content and activity of the respiratory chain redox enzymes. The participation of vitamin E in processes of oxidative phosphorylation may be connected with the metabolism control and ubiquinone functioning.
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